Tara thought her backpack was too heavy. She decided to measure the mass of her backpack with her books and binder inside. Then she measured the mass of each individual thing that was inside her backpack. Finally, she found the mass of her empty backpack. She wrote all the masses in a table, shown below. Mass of Backpack & Items Inside Item Mass (in kilograms) math book 3 science book 2 binder 1 empty backpack 1 full backpack 7 Looking at the table, she noticed that adding up all the masses of the items in the backpack equaled the total mass of the full backpack. What did this demonstrate about mass? A. The mass of a full backpack does not depend on what is in it. B. The mass of a whole object is equal to the sum of the masses of its parts. C. The mass of a whole object is more than the sum of the masses of its parts. D. The mass of a whole object is less than the sum of the masses of its parts.

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?

Both independent and dependent clauses